Alarm device



.l. M. BUTCHER.

ALARM DEVICE.

APPLICATION FILED JAN.2,1919.

Pawnted Oct. 4, 1921.

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' vention, theialarm device is preferably made UNITED STATES PATENT OFFICE,

JAMES M. BUTCHER, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO

' SENTINEL ALARM (10., OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

ALARM DEVICE.

Patented Oct. 4, 1921.

Application filed January 2, 1919. Serial 'No. 269,212.'

To all whom z't may concern:

Be it known that I, JAMnsM; BUTCHER,

a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Alarm Devices, of which the following is a specification! The object of the present invention is to provide an alarm device which' can be conveniently applied in position to be heldinoperative by the closed position of a dooror other closure swinging upon hinges, (hereinaiter referred to as the door), and released or actuated to give analarm by the opening of the door or its separation from the door jamb orother appurtenant portion of the surrounding structure fromand toward which the door moves in opening and closing. The actuating member of the alarm comprises a longitudinally sliding member to be mounted on thefaceof a'door or other closure, in position to be moved in the direction to silence the alarm, or avoid actuating it by encountering'the door jamb or other frame member to and from which the door moves in closing and opening; said sliding member being moved by means of a spring, in the opposite direction, to release or actuate the alarm when the door is open. In carrying out the inin the form of a plunger-released bell of known type, adapted to be mounted upon the casing which carries the sliding member, so that said casing also serves as a 'mounting for the alarm.

The invention will be more fully understood upon reference to the accompanying drawings, in which- Figure 1 is a face View, and Fig. 2a sectional view of a portion of a door and its appurtenant jamb or frame to which the invention is shownapplied by way of illustration. v i V Fig. 3 is a sectional view of one form of casing in' which the displaceable controlling member is mounted.

Fig. 4 shows a modified construction of same; and

Fig. 15 is a section on the'line 5", 5 of represents a portion of a door; and B a door jamb with which the present invention is adapted to cooperate. 1 represents a housing for the alarm-actuated device which also serves as a mounting for an alarm which is preferably in the form of a bell 2 and a shell 3, releasably supported on said mountingby means of a stud 3 entering the contracted slot opening 4 and having a push-pin stop member2 by which the-alarm mechanism is normally held in restraint, but which releases said alarm mechanism to automatic action when the push pin is longitudinally displaced. Mounted to slide longitudinally in the CH9. ing l is the controlling member 5, having ends 5 and 5 which protrude beyond the.

ends of the: casing and are presented in po sition, the one to control the stop member Or plunger 2. which releases the'alarm, and the other to encounter the door jamb B when the door is closed. Toadapt the end 5*, for cooperation with the door j'amb, said end is deflected inwardly to enter between the edge of the door and its jamb. It might, however, assume another position if it is'desired to have it cooperate with a fixed structure occupying some other position-relatively to the door.

The end 5 is deflected outwardly in order to bring it opposite the plunger 2 The end 5 is preferably recessed, for instance, v

by turning up portionsof the metal thereof, in order to confine the plunger 2 in osition to engage therewith; but the'shoulders 5, thus provided, are inclined so that the plunger may be swung out of the depression and away from the projection 55 when it is desired to render the alarm inactive during the'opening and closing of the door, to permit which the stud3 in the neck of the opening 4 constitutes a pivotal bearing for the alarm. v i

To facilitate manipulation of the alarm when it is of atype requiring to be wound, the stud 3 may readily be passed through the large portion of the opening 4 in removing the alarm from and returning it'to the mounting, and the extension of the reduced portion of the opening 4.- on both sides of its enlargement renders the mounting reversible to suit right and'left hand doors.

A spring 6 interposed between the casing 1 and the member 5, as, for instance, by

her in the direction to actuate the plunger 2 and so cause the alarm to sound each time the door is moved sufliciently to take the end 5 away from the door jamb B; but whenever the door is returned, the end 5 of the controlling member 5 will so en gage the door jamb B as to displace the controlling member in the opposite direction, and so hold the end 5 away from the plunger.

It is understood that while the invention is described with specific reference to a door and a door jamb, it is not limited to this specific use, but might be employed in connection with an closure member moving relatively to a xed structure in a direction to develop longitudinal displacement m the controlling member by the closing movement, for instance, a sliding door, or even a window.

For mounting the casing 1 upon the building structure to which it is to be applied, it may be provided with ears 7 asshown in' Figs. 1 and 3, or it may have across bar 7* formed thereon and extending across its bottom beneath the sliding control member 5, as suggested in Figs. 4 and 5, said control member 5 being provided with an enlarged slot 5 to afford access to. the screw or other fastening means to be in serted through the bar 7 into the building structure. In this instance the opening 4 serves to admit the tool employedfor this purpose. I

I claim: Y I

1. In an alarm device,,an alarm, a mounting adapted to be a plied to the face of a closure to be guar ed, and a controlling member longitudinally slidable on said mounting and having its ends deflected, respectively, for engagement with the jamb or frame of said-closure and with the alarm; said alarm being mounted in the'path of movement of said controlling member.

v2. In an alarm device, an alarm, a mountin upon which said alarm is removably fitted, adapted to be applied to the face of a closure to be guarded, and a controlling member longitudinally slidable on said mounting and having its ends deflected, respectively, for engagement with the jamb or frame of said closure and with said alarm; said alarm being mounted in the ath of movement of said controlling mem- Ber and being removable from the mounting without disturbing the controlling member.

3. In an alarm device, a mounting, a control member slidably supported in said mounting and adapted for coaction with a controlling surface, and an alarm supported on said mounting having a stop member in position to enter the path of the' control member, and said alarm being rotatable on Said mounting to bring its stop member into and out of said path. V V 1 4; In an alarm device,,a mounting, a controlling member slidable in said mounting and having a projection extending from .the plane of its sliding movement, and an alarm rotatably supported on saidmounting and having a stop member which by the rotation of the. alarm is brought into and of the alarm i brought into and out of the path of said. projection; said projection being concaved to retain its engagement of the releasing member. j

- 6. In an alarm device, a mounting, a controlling member. longitudinally displaceable on said mounting, an alarm having a stop member adapted for coaction with said controlling member, and means for releasably securing said alarm on said mounting, comprising a slot on one part and a stud on the other part. r

7. In an alarm device, a mounting, acontrolli'ng member longitudinally displaceable 1 on said mounting, an alarm having astop member adapted 'for coaction with said controlling member, and means for releas ably securing said alarm on "said mounting, comprising a slot on one part and a stud on the other 'part; said slot having'an enlargement which passes the studto and from the slot and extending in opposite directions from said enlargement whereby the mounting is made reversible. g V V 8. In an alarm device, a mounting, a controlling member longitudinally displaceable on said mounting, an alarm having astop 7 member adapted for coaction with said controlling member,- and means 'for releasably securing said alarm on said mounting, comprising a slot on one part and a stud on the other part rotatably fitting said slot.

9. In an alarm device, a housing, a con-- trolling member inclosed by and sliding longitudinally in said'housing and provided at one end with a projection adapted for impingement to actuate it, and at its other end with a projection extending outwardly beyond the outer surface of the housing, and an alarm releasably supported at an intermediate point upon the housing andhaving a releasing member presented inthe direction of sliding movement of the controlling member and in position to be engaged by the outwardly presented. projection.

Signed at Chicago, Illinois, this 30th day I of December, .1918. 1 7

JAMES M. BUTCHER. 

